Dark energy degeneracies in the background dynamics

作者：Hlozek Renee^*; Cortes Marina; Clarkson Chris; Bassett Bruce

来源：General Relativity and Gravitation, 2008, 40(2-3): 285-300.

DOI：10.1007/s10714-007-0548-6

We discuss degeneracies between dark energy and cosmic parameters using a fully non-perturbative and non-parametric approach. This allows us to examine the knock-on bias induced in the reconstructed dark energy equation of state, w(z), if there is a bias in the cosmic curvature or dark matter content. Assuming perfect Hubble, distance and volume measurements, we show that for z > 1, the bias in w(z) is up to two orders of magnitude larger than the corresponding errors in Omega(k) or Omega(m).

• 出版日期2008-2